Perforator device



J y 1958 is. K. MURCHISON 2,84

PERFQRATOR DEVICE '7 Sheets-Sheet 1 Filed Jan. 17, 1955 gamma 51 K Muff/#5044 06664550,

1N VEN TOR. JM W 7 Sheets-Sheet 3 Filed Jan. 17, 1955 Ill FIG. 6

mmvrox BY 1? fill-r l y 29, 1958 'B. K. MURCHISON 2,845,123

. PERFORATOR DEVICE Filed Jan. 17. 1955 4 7 sheets-sheet 4 IN V EN TOR.

BY Zlhak.

y 1958 B. K. MURCHISON 2;845,123

PERFORATOR DEVICE Filed Jan. 1'7, 1955 7 Sheets-Sheet 5 I00 la by m United States Patent 6 PERFORATOR DEVICE:

Blackwell K. Murchison,.deceased,= late oflBrooklyn, by Bessie F. Murchison, executrix, Brooklyn,,N.,Y'.'

Application January 17, 1955, Serial No. 482,042

2Clai1ms.- (Cl. 164-113.)

This application relates to theart of perforating or punching devicesand particularly concerns a novel paper tape perforator.

The apparatus embodying the invention. is intended to punch holes in a continuous paper tape on successive lines as the paper is drawn automatically through the apparatus. The apparatusis actuated'by.electricallpulses.

received from a typewriter adapted for this purpose as disclosed in copending patent applicationeSerial Number 482,361, filed January 17, 1955. The punched. tape may be employed to control a type setting machine suchtas disclosed in copending application Serial Number 482,041, filed January 17, 1955, and now PatentNo. 2,830,820. The perforator embodying the present invention has general application wherever it isdesired to punch. hopes in tape according to a prearrangedxcode, so-that the punched tape can be used to operate atype-setting machine, automatic typewriter, telegraph or radio: transmitter, addressing machine and so on.

It is a principal object of the invention to provide a perforation device having a unique. paper feeding and paper punching mechanism.

It is a further object to provide aperforator device which is wholly controlled in its punchingofpaper tape by electrical pulses.

It is a further object to provide apaperperforator for punching holes in a continuously fed paper'sheet or tape, according to a prearranged code.

Other and further objects: and advantages of the invention will become apparent from the followingadescription taken together with the drawing. wherein:

Fig. 1 isan' elevational side viewofasingle. basic paper feeding andpunching mechanism usable-in the'invention.

Fig. 2 is similar to Fig. 1 but illustrates a step in the paper punching operation of the mechanism.

Fig. 3 shows a front view'of a portion of the mechanism as taken on lines 3-3 of Fig. 1'.

Fig. 4 shows on an enlarged. scale a plan view of a portion of the mechanism as. taken on lines 4-4 of Fig. 1.

Fig. 5 showszan elevational. side view on an enlarged scale of atportion of the mechanism of Fig. 1.

Fig. 6 is a top plan view ofthe apparatus embodying the invention.

Fig. 7 is a side elevational view of the apparatus.

Fig. 8 is a rearview of the apparatus.

Fig. 9 is a sectional view taken on lines 9-9 of Fig. 8.

Fig. 10 shows on an enlarged. scale a front view partly in section of details of the apparatus.

Fig. 11 is a schematic view. of: an electrical circuit employed inthe apparatus.

The basic paper. feeding and: perforating mechanism of the apparatus is shown in Figs. 1 and 2. A supply roll Rof paper 'P is carried on roller support wheels 21. The paper passes under the idler transfer roller 22 alongside of guide plate 29, then along the drive roller-23 which has sprocket teeth 24'at its ends.- Thesetipsengage-in the alignedslots 25 and holes 26, disposednear the edges of 2,845,123 Patented July 29, 1958 the paper and shown clearly in Fig. 3. The paper passes,

The paper passes around transfer roller 39, then, down in a slack loop L and over transfer roller 40 to-the drive roller 50: Roller 50-has sprocket teeth 51 which engage in apertures 25, 26 of the paper. From roller 50, the paper passes over transfer roller 52 and under transfer roller 53' to be wound up in a roll'R on motor driven take-up. roller wheels 54.

The perforator rods 36- are supported for straight line movement through apertures in plates 55, 33 and 34. Each rod 36 has a slot 56 in its inner end in which slides the tapered end of lever 57 as shown on an enlarged scale in Fig. 4. The lever 57 is pivoted on its lower endon a shaft'58 whichis engaged in slot 59=near the end of'the lever. A shaft pin 60 backs up the lever. Lever 57 carries a pin 61 on which is engaged arm 62. Arm 62 is provided-with an aperture 63 to permit movement of the arm in a manner to be described. Arm 62 is biased downward by spring 64 attached to plate 65. Another spring;

66 biases one end of arm.62 upwardso-that the arm is snugly engaged in aperture 63. The upper end of spring 66 is-anchoredon lever 57. Another spring70 is attached between plate 71 and the end of rod 36and biases the rod inwardly away from the paper in passage 32.

A guide plate 72 serves to control movement of lever;

the movement of arm 76. The upper end of arm 76 is.

engaged with shaft 81 which passes through the generally triangularlevershown on an enlarged scale in.

Fig. 5. A spring 85 connects the. upper end of arm 76 and lever 80. A slot 86 is providedinthe upper portion of lever 80 and serves to engage the-lever with pin 87 attached to plunger 88 of an electromagnet or solenoid89. Thesolenoid is provided with electrical terminal conductors 90. The solenoid is carried'on brackets 91, 92 supported onplate 93. A shaft 94 serves as a fulcrum for lever 80=and is engaged in slot 95' of the lever 80. The shaft 94 is supported in a bracket plate 96 which is supported on plate 97. A continuously rotatable'rubber covered drum 98 is disposed to be contacted by the ends 99 of arms 62 when they are lifted by arms 76.

Before discussing the mode of operation ofthe mechanism above described it would be well to note the dispositionof the several parts in the apparatus as shown in Figs. 6 to 10. Fig. 6 is a top plan view of the apparatus in which the several parts are shown without any paper threaded therethrough. The apparatus includes a pair of side frame members 100 which carry the roller support wheels 21 at the top thereof. The several rollersinsofar as visible in this drawing are numberedto correspond with the numbering of Figs. 1 and 2. It will be noted that for each aperture 35 there is provideda rod 36, lever 57,.

shown in Fig. 6. The shaft 104 carries a worm 107 which drives a spring belt 108 via a gear 109 and pulley 114. The belt drives pulley 110 connected to a wheel 54 via a shaft pin 111 as shown in Fig. 7. Gear 109 is also connected to drive roller 50 via shaft 113. Shaft 104 carries two additional worms 115 and 116. Gear 131 is driven by worm 115, and serves to drive roller 39. Worm 116 drives gear shaft 120 which is connected to drive" roller 23. Step switch 135 drives roller 37 in discrete steps each time a pulse is received via conductors 136.

In Figs. 8 and 9 is shown the stacked assemblyof solenoids 89, each being disposed to coact with an associated arm 76. Each arm 76 has a length suflicient to extend up to the plunger 88 of the associated solenoid. The single drum 98 activates each lever 57 via an arm 62. The several levers 57 being disposed in parallel array as shown in the drawing to actuate an individual rod 36.

In Fig. is shown on an enlarged scale a portion of the mechanism used to control the paper drive motor 103. The switch contacts 126, 127 are electrically connected to the motor 103. Contact 126 is movable by the pin 124 which has an insulator head 128. Pin 124 is movable by the slider 129 which contacts circular wedge cam member 130 on gear 117. Gear 117 rotates on a shaft 132 supported by frame member 100. The slider 129 moves in a slot in the hub 133 of gear 131. Gear 131 is driven by worm 115 mounted on shaft 104 shown in Fig. 7 so that gear 131 rotates when motor 103 is actuated. Gear 117 is driven by gear 118 which is driven by gear 119. Gear 119 and roller 37 are both driven by step switch 135 shown in Fig. 7. The step switch is connected to conductors 136 and is actuated by pulses received via these conductors each time a hole is punched in paper P to advance the roller 37 and the paper one step.

In operation a roll of paper R is mounted on roller supports 21 and then threaded around the several rollers as shown in Figs. 1 and 2. It will be noted that slack loops L and L are initially provided. The paper is threaded through to a spool held by the rollers 54. In Figs. 1 and 2 are shown steps in the punching operation. Initially rods 36 are all retracted from the paper in passage 32 as shown in Fig. 1. When an electric pulse is received by a solenoid 89 via conductors 90 from a typewriter or other source, plunger 88 is electromagnetically retracted, pivoting lever 80 on shaft 94 and raising arm 76. Hook 75 in arm 76 will engage finger 74 on arm- 62 and lift it until the end 99 of the arm 62 contacts the continuously rotating drum 98. Arm 62 pivots on pin 61 as it is lifted by the drum until as shown in Fig. 2 shaft 73 is contacted when finger 74 will be clear of hook 75. Spring 77 restores arm 76 to its initial lowered position while arm 62 pivots on shaft 73 thrusting arm 57 forward. Arm 57 in moving forward while pivoting on pin 58, thrusts rod 36 forward to punch a hole in the paper. Arm 62 is at once returned to its original position by spring 64 and rod 36 is retracted by spring 70. So rapid is the movement of arms 62 and 57 and rod 36 that they can complete their cycle of movement before the plunger 88 can again be actuated by another pulse. In normal operation each rod may represent a letter in upper or lower case type of a given font. The position of each hole will thus be representative of the particular type character to be set. As the holes are punched the drive rollers advance the paper in discrete steps while the paper is wound up in roll R. If the roll R tends to rotate faster than it passes through passage 32 which may occur if the receipt of pulses is slow while the diameter of R becomes increasingly larger then loop L" will tend to become smaller, but means are provided for stopping the rotation of roll until the slack in the paper at L' is restored. This is accomplished by the mechanism shown in part in Figs. 7 and 10. Gear 131 is driven by motor 103 via shaft 104 and worm 115 as above mentioned. The gear 131 turns the slider 129 along the face of cam 130. If gear 117 turns too slowly the slider reaches a low point of cam 130 and is moved inwardly in the slot of hub 133, as contact 126 moves pin 126 and pin head'128 inwardly to break the contact with contact 127. Thus the electrical circuit supply to motor 103 is broken and motor 103 stops. Gear 117 continues to turn however as successive pulses are received and holes are punched in the paper. The earn 130 continues to rotate past the stationary slider 129 gradually pushing it outwardly until contact between contacts 126, 127 is restored when motor 103 resumes rotation to wind up the punched paper on the roll. The motor speed is set so that it will cause the paper to be wound up at the fastest speed at which the paper is punched. The slack loop L is provided so that no tension will occur in the paper between rollers 23 and 37.

Although a single embodiment of the invention has been disclosed this has been by way of illustration only, The invention is not to be construed as limited to this embodiment since many changes are possible without departing from the spirit of the invention as defined by the scope of the appended claims.

What is claimed is:

l. A paper perforator including paper drive means and paper punching means, comprising a plurality of electromagnets which are individually energizable upon receipt of successive electrical pulses, a paper drive roller operative to move a paper pastthe paper punching means, said punching means including a plurality of punch rods longitudinally movable into and out of engagement with said paper, a pair of perforated plates supporting the paper between them for engagement with said punch rods,'said rods being movable by coacting arms, a continuously rotating friction drum, links between said arms and said friction drum, bell cranks connected to said electromagnets and actuated thereby, pull rods interconnecting said bell cranks and said links, whereby the bell cranks are actuated to pull the pull rods and to bring the links into engagement with said friction drum, thereby causing the links to actuate the coacting arms and to thrust the punch rods into punching engagement with the paper to effect punching of the paper, a paper take-up roller, a motor driving said take-up roller, and slack loop control means for stopping the motor responsive to the relative positions of the take-up and paper drive rollers.

2. A paper perforator including paper drive means and paper punching means, comprising a plurality of electromagnets which are individually energizable upon receipt of successive electrical pulses, a paper drive roller operative to move a paper past the paper punching means, said punching means including a plurality of punch rods, longitudinally movableinto and out of engagement with said paper, a pair of perforated plates supporting the paper between them for engagement with said punch rods, said rods being movable by coacting arms, a continuously rotating friction drum, links between said arms -and said friction drum, bell cranks connected to said electromagnets and actuated thereby, pull rods interconnecting said bell cranks and said links, whereby the bell cranks are actuated to pull the pull rods and to bring the links into engagement with said friction drum,

1 thereby causing the links to actuate the coacting arms and to thrust the punch rods into punching engagement with the paper to effect punching of the paper, a paper take-up roller, a motor driving said take-up roller, and

slack loop control means for stopping the motor responsive to the relative positions of the take-up and paper drive rollers, said slack loop control means including a pair of gears connected respectively to the paper drive roller and the take-up roller, a cam carried by one of said gears and a cam following slider carried by the other gear, said slider being effective to open and close an electrical circuit to said motor.

References Cited in the file of this patent UNITED STATES PATENTS 266,593 Johnson Oct. 24, 1882 6 West Mar. 28, 1905 McCall Mar. 17, 1908 Groebli Feb. 2, 1909 Kleinschmidt Dec. 3, 1912 Head Apr. 1, 1930 Hoover et a1. Nov. 3, 1931 Tholstrup June 12, 1945 

